Look for this in your html template: Add your photo url where it shows the generic one.

Where it says This is dummy text, add your own description there. preview and save if all is well.

<img alt='' height='120' src='http://2.bp.blogspot.com/-_0qyTMr2uYI/VIuQL9jbCDI/AAAAAAAAH2U/vPhwdobq9NE/s1600/Userava.png' width='120' />
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<h2>About <a href='#' rel='author' title='Posts by Admin'>Admin MC3</a></h2>
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<p>This is dummy text. It is not meant to be read. Accordingly, it is difficult to figure out when to end it. But then, this is dummy text. It is not meant to be read. Period.</p>
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